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74VHC240 Datasheet PDF

74VHC240
STMicroelectronics

Part Number 74VHC240
Description OCTAL BUS BUFFER
Page 12 Pages
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74VHC240
OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (INVERTED)
s HIGH SPEED: tPD = 3.6ns (TYP.) at VCC = 5V
s LOW POWER DISSIPATION:
ICC = 4 µA (MAX.) at TA=25°C
s HIGH NOISE IMMUNITY:
VNIH = VNIL = 28% VCC (MIN.)
s POWER DOWN PROTECTION ON INPUTS
s SYMMETRICAL OUTPUT IMPEDANCE:
SOP
TSSOP
|IOH| = IOL = 8 mA (MIN)
s BALANCED PROPAGATION DELAYS:
tPLH tPHL
)s OPERATING VOLTAGE RANGE:
t(sVCC(OPR) = 2V to 5.5V
s PIN AND FUNCTION COMPATIBLE WITH
uc74 SERIES 240
ds IMPROVED LATCH-UP IMMUNITY
ros LOW NOISE: VOLP = 0.9V (MAX.)
PDESCRIPTION
teThe 74VHC240 is an advanced high-speed
leCMOS OCTAL BUS BUFFER (3-STATE)
ofabricated with sub-micron silicon gate and
sdouble-layer metal wiring C2MOS technology.
bG output enable governs four BUS BUFFERs.
OThis device is designed to be used with 3 state
-memory address drivers, etc.
Table 1: Order Codes
PACKAGE
SOP
TSSOP
T&R
74VHC240MTR
74VHC240TTR
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage. This device can be
used to interface 5V to 3V.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
Obsolete Product(s)Figure 1: Pin Connection And IEC Logic Symbols
November 2004
Rev. 5
1/12

















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74VHC240 datasheet pdf
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